Head assembly for spring shade rollers



octi- 1951 .1. T. MAYER, JR 0 I HEAD ASSEMBLY FOR SPRING SHADE ROLLERSFiledSept. 1a, 1950 v +3- 44 4 a [06 F/ G.

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1 HI! I! //7 van far Joseph TMQ/Q'c/K Patented Oct. 2, 1951 UNITEDSTATES PATENT OFFICE HEAD ASSEMBLY FOR SPRING SHADE- ROLLERS Joseph T.Mayer, Jr., Muskegon, Mich., assignor to Stewart Hartshorn Company, NewYork, N. Y., a corporation of New Jersey Application September 18, 1950,Serial No. 185,404

3 Claims.

easily and quickly.

The invention will be understood from the following description of thepresent preferred embodiment thereof, taken in connection with theaccompanying drawing, in which:

Fig. 1 is a fragmentary, broken sectional elevation, on an enlargedscale, of a shade roller and the spring mechanism which is mounted in anend thereof;

Fig. 2 is an exploded view, on a smaller scale than Fig. 1, showing inperspective the various elements of the mechanism; and

Fig. 3 is an end elevation, on the same scale as Fig. 1 taken on theline 33 of Fig. 1.

Referring to the drawing, the roller or barrel 4, which is usually butnot necessarily made of wood, is shown as provided at one end with anaxial cavity 6 adapted to receive the coil spring 8 which surrounds thespindle or stick [0. As is customary, the inner end l2 of the spring 8extends transversely of the coil and is adapted to enter a slot l4 inthe end of the spindle Hi. The other end of the spindle I is preferablyaxially drilled for a short distance and provided with a metal ferrule16 having in its end a rectangular opening I 8 adapted to receive thespear 20, the pointed end of which is driven into the end of the spindleduring assembly, and secured therein by a pin 22, which is driventhrough the spindle I0 and through a hole 24 in the spear.

The spear is provided with a shouldered portion 25 on which is mounted ahub 26 which may be secured to the spear by staking the corners 28. Hub26 has a cylindrical portion 29 and a flange 30 in which are twodiametrically opposed notches 3|, the sides of which extend radially andare spaced apart by about 60 of arc.

As is well understood in the art, the shade roller is so installed thatthe flat end of the spear 20 is secured against rotation and thismaintains the hub 26 and the spindle I 0 stationary while the rollerrevolves about them.

Mounted against the end of the roller 4 is a member herein termed the"cup 34 which is a solid molded body which may, for example, be formedby pressing in a mold and sintering powdered metal in accordance withwell known procedures. The cup has a cylindrical skirt 2 35 and a largercylindrical head 36 having a fiat outer face 38, the periphery of whichis preferably beveled as shown at 39 to facilitate assembly. The face 38of head 36 is provided with a pair of slots 40 which are rectangular incross-section. These two slots lie on opposite sides of and adjacent toa line passing approximately through the center of the cup, as bestshown in Fig. 3, and open into a cylindrical depression 4| in the centerof the cup which .is

of sufficient depth to receive the flange 30 of the hub 28. Skirtportion 35 of cup 34 has a cylindrical axial bore 42 which is ofsufficient size to freely receive the ferrule 1-6 on the end of thespindle [0. i Connecting depression 4| and bore 42 is a smaller bearinghole 43. The skirt 35 encloses the end of spindle in and prevents any ofthe outer end coils of spring 8 from jamming between the spindle and thecup when the spring is wound very tight. As shown in Fig. l, the rearface of the head 36 of the cup may have one or more small projections 44intended to bite into the wood or other material of the roller to securethe cup and roller against relative rotation. The cup is provided with athird slot 45 extending across the face 38 and through the edge of thehead 36 as best seen in Fig. 2. This slot receives the end of the coilspring 8 which is preformed as shown in Fig. 2 to snap into the slot 44.

Freely sliding in the slots 40 are a pair ofdogs or pawls 46 havingbeveled inner faces 48. After assembly of the device, these dogs areheld in their slots by the sheet metal shell 50, the cylindrical wall 5|of which surrounds the endof the roller and the cup and the flatinwardly extending flange 52 of which abuts the face 38 of the cup. Theferrule is held in place on the roller by crimping or rolling in itsrear edge as shown at 54 and this holds the entire assembly together.

To assemble the parts above described, the hub 26. is first staked tothe spear 20 and this sub-assembly is positioned in the depression 4| ofthe cup. The spindle [0 with its ferrule l6 attached is then assembledto the spear and secured by the pin 22. The spring 8 is positioned overthe spindle with-its end l2 in the slot l4 thereof and the preformedbent end 8a of the spring is then snapped into the slot 45. Thisassembly is then positioned in the open end; of the roller, and while inupright position, the dogs 46, are dropped into the slots 44 with theirlonger sides directed toward the center of the spear 20,

as shown in Fig. 3 and the shell is slipped over the end of the roller,pressed down and crimped in place. The angle of the beveled faces 48 ofthe do s is such that these faces will override the corners of thenotches 3| in the hub when the roller rotates. As will be understoodfrom Fig. 3, the roller is mounted with the spear in approximatelyupright position so that one of the notches; 3;! is at the top. Gravitywillthus cause one of the dogs 46 to fall into the notch 3|, and if theroller is rotated slowly, one edge of the notch will engage the dog andlock the roller against rotation. However, if the roller is movedrapidly, centrifugal force will throw both dogs outwardly so that theywill not en age the notches 3| regardless of the direction of rotation.

Hub 26 may be economically manufactured from pressed metal powder likethe cup 34 and either or both of these members may be impregnated withlubricant which remains in the poresmade of wood or other compressiblematerial,

this portion of the spring is pressed into the roller when the parts areassembled, serving to lock the cup 34. against rotation relative to theroller. On smaller size rollers arrying light weight shades, thislocking force may be sufiicient so that the projections 44 on the rearface of the cup may be dispensed with.

It. will thus be seen that the, invention provides a shade rollerstructure having a minimum of parts which are cheap to manufacture'andeasy to assembleand which is capable of operating for long periodswithout attention. Both the dogs 46'and the end 8a of the spring 8 areheld in their respective slots in the cup 34 by the shell 50 which issecured thereover.

It is to be understood that the foregoing detailed description is to beconstrued merely as illustrative and not as a limitation of theinvention which is pointed out in the appended claims.

What is claimed is:

1. A head assembly or a springshade roller of the typ ha n a. h l ow endcontaini a helical spring secured at its inner end to a spindle locatedaxially in the roller, said assembly comprising a solid molded cupmember having'a ylindr cal head of abou th same dia t r as the rollerand having a flat outer face, a, cylindrical shell having an inwardlyextending flange adapted to lie flat against said face, said cup memberhaving an axial bore and a depression inits face portion of greaterdiameter than and and the beveled faces being of greater depth than thenotches in said hub flange and adapted to override the corners of saidnotches, and a spear extending through the hub into the spindle andsecured therein, said shell being fastened to the roller to hold theassembly in place thereon.

2. A head assembly for a. springshade roller of the type having a hollowend containing a helical spring secured at its inner end to a spindlelocated axially in the roller, said assembly comprising a solid moldedcup member having a cylindrical head of about the same diameter as theroller and having a flat outer face, a cylindrical shell having aninwardly extending flange inner corners of the dogs being adjacent saidline adapted to lie flat against said face, said cup member having anaxial bore and a depression in its face portion of greater diameter thanand 7 opening into said bore, a hub adapted to form a bearing in saidbore and having a notched flange rotatable in said depression, said cupmember having a pair of inwardlydirected slots in its face in alinementwith said notched flange, a pair of dogs freely slidable in said slotsand having oppositely directed beveled, inner faces of greater depththan the notches in said hub flange and adapted to override the cornersof said notches when the roller rotates, in one direction, and a spearextending through the hub and into the spindle and secured therein, saidshell being fastened to the roller to hold the assembly in placethereon.

3. A head assembly for a spring shade roller of the type having a hollowend containing a helical spring secured at its inner end to a spindlelocated axially in the roller, said assembly comprising a solid moldedcup member having a cylindrical head of about the same diameter as theroller and having a fiat outer face, a cylindrical shell having aninwardly extending flange adapted to lie flat against said face, saidcup member having 'an axial bore and a depression in its face portion ofgreater diameter than and opening into said bore, a hub adapted to forma bearing in said bore and having a notched flange rotatable in saiddepression, said cup member having a pair of inwardly directed slots inits face in alinement with said notched flange, a pair of dogs freelyslidable in said slots and having oppositely directed beveled innerfaces of greater depth than the notches in said hub flange and adaptedto override the corners of said notches when the roller rotates in onedirection, the cylindrical head of said cup having an additional slotextending through its outer, edge and across its outer face, theadjacent end of said spring being bent and hooked over said head andlying in said slot, and a spear extending through the hub and into thespindle and secured therein, said shell being fastened to the roller tohold the assembly in place thereon and secure the spring end to the cupmember.

J S H T- M Y R, JR.-

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,344,358 Simpson June 22, 19201,855,496 Streicher Apr. 26, 1932

